Pumice found in tephra of Jan 19 (0.5 mm across)
{"Image DocumentName": "Pumice found in tephra of Jan 19 (0.5 mm across)", "Image ImageDescription": "Juvenile in tephra. Phreatic explosions began in 2008, and repeated in % of pumice were observed in the Jan 19, 2011 product, a week before sub-plinian explosions. Juvenile materials were found in the products of phreatic eruptions a week before the first subplinian explosion.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}